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LLC vs S-Corp · Tax Comparison

When does S-Corp election actually save you money?

Most profitable LLCs leave self-employment-tax savings on the table by not electing S-Corp treatment. But S-Corp adds payroll, reasonable salary requirements, and ~$1.5K-$3K/year in compliance. Here's the math.

Part of your File.Business BOS · 51 jurisdictions · 220K+ businesses
LLC · DEFAULTNET PROFIT$100,000SELF-EMPLOYMENT TAX$15,300on full $100K · 15.3%FEDERAL INCOME TAX$18,500TOTAL TAX$33,800TAKE HOME: $66,200S-CORP · ELECTEDNET PROFIT$100,000SELF-EMPLOYMENT TAX$9,180on $60K salary · 15.3%FEDERAL INCOME TAX$18,500TOTAL TAX$27,680TAKE HOME: $72,320SAVE $6,120/YRS-CORP ELECTION · FORM 2553Sample: $100K net, $60K reasonable salary, single filer
LLC vs S-Corp

Real comparison, plain math.

SE-tax savings

S-Corp lets you split profit into "reasonable salary" (subject to 15.3% SE tax) + distributions (not). Saves 15.3% × distribution portion.

Breakeven at ~$60K

Below ~$60K profit, S-Corp compliance costs exceed savings. Above $60K, savings climb. Above $150K, savings substantial.

Reasonable salary required

IRS audits target low S-Corp salaries. Industry benchmarks + market rate. Too-low salary triggers reclassification + back taxes.

Added compliance

S-Corp adds: payroll system, W-2, quarterly 941, annual 940, K-1 generation, Form 1120-S. ~$1.5K-$3K/year compliance.

Form 2553 election

Made by filing Form 2553 within 2.5 months of formation or beginning of tax year. Late-election relief available.

Eligibility restrictions

<100 shareholders, all US citizens/residents (or some trusts), 1 class of stock. Disqualifying transfer = automatic conversion back to default.

How it works

A clean handoff, in 4 steps.

1

Assess current profit

Last-year net profit (or projected). S-Corp savings scale with profit above ~$60K.

2

Set reasonable salary

IRS expects market-rate salary for the work you do. Industry comps + RC Reports data.

3

File Form 2553

Election effective for current tax year if filed within 2.5 months. Late-election relief via Rev. Proc. 2013-30.

4

Operationalize payroll + 1120-S

Set up payroll service. File 941 quarterly, 940 annually, 1120-S annually. Pay tax distributions to cover K-1 income.

Two ways to engage

One-time, or part of your BOS.

S-Corp election only
$199
We file Form 2553 + late-election relief if applicable.
  • Form 2553 prep + filing
  • Late-election relief (Rev. Proc. 2013-30)
  • Specialist review
  • IRS confirmation tracking
  • Filed receipt to vault
File 2553
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Compliance Subscription
$199/year
S-Corp + Compliance Sub + payroll referral.
  • Form 2553 included
  • State + federal compliance tracking
  • Payroll partner intro
  • Quarterly 941 reminders
  • Annual 1120-S coordination
  • BosAI for S-Corp questions
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FAQ

Common questions.

What is the difference between an LLC and an S-corp?

This compares two different things: an LLC is a legal entity type, while an S-corp is a tax election an LLC or corporation can make. So the real question is usually whether your LLC should elect S-corp tax treatment. We flag when that election helps so you are comparing the right things.

How does an S-corp election save taxes?

An S-corp lets owners split income between salary and distributions, and distributions are not subject to self-employment tax, so an active owner earning enough profit can reduce self-employment tax versus a default LLC. We flag whether your profit level makes the election worthwhile so you do not add payroll complexity for little benefit.

When should an LLC elect S-corp status?

Generally once the business earns enough profit that the self-employment tax savings on distributions outweigh the added payroll and administrative cost, which is a specific threshold for each owner. We flag whether your numbers justify the election so it saves money rather than just adding complexity.

What is the reasonable salary requirement?

An S-corp owner who works in the business must pay themselves a reasonable salary subject to payroll taxes before taking distributions, and setting it too low invites IRS scrutiny. We flag how the reasonable-salary rule works so your S-corp captures the benefit without creating an audit risk.

Does electing S-corp change my legal entity?

No: your LLC stays an LLC legally and simply changes how it is taxed, so you keep the LLC's liability protection and flexibility while gaining S-corp tax treatment. We flag this so you understand the election is a tax choice layered on your existing entity, not a new entity.

What are the downsides of an S-corp?

It adds payroll, a separate S-corp tax return, and stricter rules, and it limits who can own the business, so the tax savings must outweigh the added cost and complexity. We flag the trade-offs so you elect S-corp status only when your situation genuinely benefits rather than by default.

Can any LLC elect S-corp status?

Most can, but the S-corp has ownership restrictions, a cap on shareholders, US-person owners, and one class of stock, so not every business qualifies. We flag whether your ownership fits the S-corp requirements so the election is actually available to you before you plan around it.

How do I make the election?

You file the S-corp election with the IRS within the timing rules, and late-election relief is sometimes available, so timing matters. We handle the election and flag the reasonable-salary and payroll setup that comes with it, so your LLC's S-corp treatment is filed correctly and on time.

Can File.Business set up an LLC with an S-corp election?

Yes: we form the LLC, obtain the EIN, and file the S-corp election when it benefits you, while flagging the reasonable-salary and payroll requirements, so your business gets the tax treatment that fits its profit level, coordinated with your tax advisor.

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